I have a 3 phase heater(Delta connected). The leads from the heater are gong to a round box and are connected to a 4 prong terminal block( 3 phases+ground). These wires are #10AWG.
The feeder wires, coming from the disconnect, are #8AWG. I'm checking the box fill:
--3 feeder wires #8 x 3 cu.in.=9cu.in.
--3 heater wires #10x2.5 cu.in.=7.5cu.in.
--1 ground wire#10x2.5 cu.in.=2.5cu.in.
--terminal block - DOUBLE the largest conductor(#8AWG)=2x3cu.in.= 6cu.in.
The minimum size of the box would be 25cu.in.? Am I right?
I would appreciate your feedback!
The feeder wires, coming from the disconnect, are #8AWG. I'm checking the box fill:
--3 feeder wires #8 x 3 cu.in.=9cu.in.
--3 heater wires #10x2.5 cu.in.=7.5cu.in.
--1 ground wire#10x2.5 cu.in.=2.5cu.in.
--terminal block - DOUBLE the largest conductor(#8AWG)=2x3cu.in.= 6cu.in.
The minimum size of the box would be 25cu.in.? Am I right?
I would appreciate your feedback!